System and method for the measurement of vestibulo-ocular reflex to improve human performance in an occupational environment

摘要

A portable eye reflex measuring device for use in an ambulatory occupational environment is disclosed. The eye reflex measuring device compares data from an eye movement detector with data from a head movement detector at a frequency or frequencies in the range of 0.01 Hertz to 15 Hertz to determine eye response to head movement. The gain and phase of the eye response is calculated using a Fourier transform. The device includes a central processing unit for receiving the eye movement data, for receiving the head movement data, and for calculating the Fourier transform. Typical human physiological conditions that can be measured can include vestibulo-ocular reflex, dynamic visual acuity, dynamic visual stability, or retinal image stability.

主权项

1. A system comprising a portable ocular reflex measuring device wherein the portable device comprises:
an eye orientation sensor wherein:
the eye orientation sensor comprises a module selected from the group consisting of an image detector, a magnetic field detector, and an electrical potential detector; andthe eye orientation sensor senses vertical movement and horizontal movement of at least one eye; a head orientation sensor wherein:
the head orientation sensor is attachable to a person's head;the head orientation sensor senses pitch and yaw of the person's head wherein pitch represents a rotation about a first axis representing up and down movement of the person's face when the rear of the person's head moves in the opposite direction and yaw represents horizontal movement of the face when looked at from the front about a second axis substantially aligned with the spine and perpendicular to the first axis; andthe head orientation sensor senses pitch and yaw in a range of frequencies between 0.01 Hertz and 15 Hertz;the head orientation sensor comprises a micro-electro-mechanical system integrated circuit comprising a module selected from the group consisting of an accelerometer, a magnetometer, and a gyroscope; and an electronic circuit wherein:
the electronic circuit comprises a power supply, a communications unit, logic circuitry, a central processing unit, a memory unit; and sensor data pre-processing circuitry;the power supply comprises a battery;the electronic circuit is responsive to horizontal and vertical eye movement information received from the eye orientation sensor;the electronic circuit is responsive to pitch and yaw information received from the head orientation sensor;the communications unit is configured to transmit orientation information related to the eye movement information, the pitch information, and/or the yaw information;the electronic circuit uses a Fourier transform to generate a vertical gain signal and a vertical phase signal in response to the vertical eye movement information and the pitch information; andthe electronic circuit uses a Fourier transform to generate a horizontal gain signal and a horizontal phase signal in response to the horizontal eye movement information and the yaw information.